If the stomach can secrete acids which can kill bacteria, then why must we make sure there isn't harmful bacteria in the food we eat?

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Solution

Bacteria are invisible to naked eye. We cannot make sure that the food we eat is free from bacteria. However, we must take precautions and should wash fruits and vegetables under tap water before eating. Once bacteria enters inside our body it is not necessary that it will follow the path of our food. The bacteria may enter our blood system and then circulate from there to various body parts. That's why we should always eat hygienic food.

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